如何在包含字典的列表中循环

Question

我首先尝试在实体列表中循环，然后我想在 id=1 的聊天源中循环。在那个id=2之后，然后是它的聊天源1,2,3。等等。

这个结构不能解决我的问题。

entities = [
    {id: 1, "chat_sources": [1, 2, 3]},
    {id: 2, "chat_sources": [1, 2, 3]},
    {id: 3, "chat_sources": [1, 2, 3]}
]

for i in entities:
    for j in entities["chat_sources"]:
        print(j)

Answer 1

你快完成了：

entities = [
    {id: 1, "chat_sources": [1, 2, 3]},
    {id: 2, "chat_sources": [1, 2, 3]},
    {id: 3, "chat_sources": [1, 2, 3]}
]

for entity in entities: # entity is already the item rather than its index
    for j in entity["chat_sources"]: # note it's entity, not entities
        print(j)

Answer 2

for elem in entities:
    print(*elem['chat_sources'], sep='\n')

如何在包含字典的列表中循环

How to loop inside a list that contains a dictionary

python

dictionary

data-structures

python-3.x